Carbureter.



Patented Feb. 24, 1914.

.2 SHEETS-SHEET 1.

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J. W. RAYMOND.

GARBURETER.

APPLICATION FILED MAR. 5, 1913.

. 1,088,181. Patented Feb. 24, 19m

2 sums-91111121 z.

F1757- I r WM 00% Ma ton, in the county of Montgomery UNITED STATESPATENT OFFICE.

J OHIiT W. RAYMOND, OF DAYTON, OHIO, ASSIGNOR TO THE AIR FRICTIONCABBURETOR COMPANY, OF

DAYTON, OHIO.

CARBURETER.

Specification of Letters Patent.

Patented Feb. 24, 1914..

T 0 all whom it may-concern Be it known that I, JOHN W. RAYMOND, acitizen of the United States, residing at Dayand State have inventedcertainnew and use- Carbureters; and I of Ohio, ful Improvements in dodeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the letters and figures of referencemarked thereon, which form a part of this specification.

This invention relates to new and useful improvements in carbureters andcomprisescertain improvements of the carbureter shown and described inLetters Patent granted to myself, September 3, 1912, No. 1,037 ,834. j

The present invention relates particularly to means for decreasing thesupply of the air at such times as when the motor is being started, thusproviding a richer mixture and overcoming the condensing effect of themanifold and insuring an easy starting operation of the motor.

The object of the invention is to provide a carbureter which is capableof most efficiently meeting all demands of the motor,

with a special view to furnishing a proper .mixture or fuel forstarting.

Referring to the accompanying drawings, Figure l is a side elevation ofa car bureter provided with my invention; Fig. 2 is a top plan view ofthe same. with parts broken away; Fig. 3 is a section on the line a-a ofFig. 2; Fig. 4 is a section on the line b-b of Fig. 2; Fig. 5 is a viewof the mixing chamber similar to Fig. 3 with the parts shown in adifferent position.

In the specification and drawings, similar reference characters indicatecorresponding parts.

Referring more ings, 1 represents the carbureter, the same gasolenechamber 2 and an air inlet passage 3. The usual float 4 is located inthe chamber 2 and connected with a gasolene inlet valve 43* by a lever 5pivoted at 6. The valve 4 is mounted in a chambered extension 7 of theshell and seats on an apertured plug 8. The gasolene is introduced tothe particularly to the drawbody or casing of the being provided with acarbureter through a pipe and enters the chamber 2 through said valveafter passing through a strainer 9 mountedin, said plug provided anannular wall ll-which forms a carbureting space which communicates withthe air passage 3. Mounted in the said carbureting space is a jet orgasolene nozzle 12 which extends from a nip 'le 13 and com municateswith the gasolene chamber 2 through a passage 14-. The jet or nozzle 12is constructed 0 upper and lower portions which combine to provide anannular orifice through which the gasolene is discharged into thecarburetin space. The flow of gasolene through sald jet 12 is controlledby a needle valve 16 mounted in an upper portion 17 of the. carburetercasing. The said portion 17 is provided with a mixture outlet passage 18which communicates with the manifold (not shown). The outlet to themanifold is through a well known type of throttle valve 19. Surroundingthe et or nozzle 12 is a shiftable sleeve 20, the lower end 21 of whichis of conical form to increase the air space on the interior of saidsleeve at that point. This sleeve. controls the supply of air to thejet, and is vertically movable, and may be elevated by the suctiondue tothe air passing the jet. The operation is such that the volume of air isproportional to the demands of the engine. The movement of the sleeve 20is controlled by gravity, or preferably by a spring 22 which encirclesthe upper part thereof. The normal position of said sleeve is shown inFigs. 3 and 4. Vhen in this position, however, the amount of air aroundthe jet 12 does not provide a mixture sufficiently rich to insure aneasy starting of said motor, owing to some of the mixture condensing onthe walls of the manifold. To reduce the volume of the air, whenstarting the motor, the sleeve 20 is adapted to be depressed or loweredto the position shown in Fig.5; this reduces the air space around thejet. The said sleeve is vertically movable,- independently of or with anouter cylinder 23 which supports it. The said outer cylinder 23 isprovided with a lower flange-24, upon which the sleeve 20 rests, andwithan upper flange 25 which forms a guide for the upperend of said sleeve20. The said cylinder 23 is vertically movable in the annular 8. Withinthe body of the carbureter is cy. Inder 23 and sleeve 20,

tion 37 on a rotary wall 11. It is held in the upper position by aspring 27. The upper position of said cylinder 23, which positionControls the normal position of the sleeve 20, is adjusted by a screw 28which engages the upper flange 25 of said cylinder. The screw 28 ismounted in a boss 29 extending from the upper portion 17 of the casingand is provided with a locking spring 30. Adapted to engage said upperflange 25 to depress the is the arm 31 of a yoke 32, which engages saidupper flange. The said arm 31 movesin an opening, while the other arm 33of said yoke is guided by a depressed portion 34 of an air-intake tube35 which extends from the inlet which conducts the air to the passage 3.The lower end of the yoke arm 33 is provided with an upturn 36 whichlies in the path of a projecvalve 38 mounted in said air passage 3. Thevalve 38 is mounted on a shaft 39 and is controlled by a lever 40 and aspring 41. The movement of'said valve is limited by lever 40 is moved toactuate the valve 38, the supply of air passing through the passage 3 ismaterially reduced. The flow of air is restricted around the jet 12 bythe sleeve 20, said sleeve being depressed by said valve 38 through theagency of the yoke 32 and cylinder 23. When the sleeve 20 is in a normalposition, as shown in Figs. 3 and 4, the conical portion or lower endthereof extends above the orifice 15 and enlarges the surroundingairspace, and, on the contrary, when said sleeve is in a loweredposition, as in Fig. 5, the smaller diameter thereof surrounds thenozzle or jet 12 and materially restricts the flow of air, thus insuringa richer mixture or fuel.

It is to be understood that the lowering of the cylinder 23, against thetension of the spring 27, is accomplished manually and only for thepurpose of the starting operation of the motor, and that the upward andindependent movement of the sleeve 20, against the tension of the spring22, is accomplished automatically, and is controlled by the demands ofthe engine as regulated by the throttle valve 19. The lever 40 isconnected with a suitable flexible or other connection (not shown) whichextends within reach of the operator.

\Vhile I have described means for mechanically gap around the gasolparticularity, I do not unessential details as these may be more or lessvaried without affecting the results accomplished by the essentials,which essentials combine toproduce a positive and simple manuallyoperated means for controlling my improved ene spray with some a pin 42,and when said,

controlling the air wish to be limited to the air gap around thegasolene jet at the needful times.

Having described my invention, I claim-- 1. In a carbureter, a casingforming ,a gasolene chamber, and an air passage, a jet mounted in theinner terminal of said assage, a tubular member surrounding sai jet andcontrolling the air space therearound, an outer tubular member movablein conjunction with the first named tubular member to decrease the airspace around the jet, a valve in said air passage, and means interposedbetween said outer tubular member and said valve to actuate both tubularmembers, whereby a mixture of greater richness may be obtained atdesired times.

2. In a carbureter, a casing forming a gasolene chamber and an airpassage, a jet mounted in said air passage, a sleeve surrounding saidjet, a tubular member surrounding said sleeve, a spring holding saidsleeve andsaid tubular member in the upper position, and means forlowering said tubular member and therewith the sleeve, to reduce the airgap surrounding said jet.

3. In a carbureter, a casing forming a gasolene chamber and an airpassage, a jet in the inner terminal of said passage, a sleevesurrounding said jet, a slidingly mounted member supporting said sleeve,-a valve in the entrance to said air passage, and means interposedbetween said valve and said slidingly mounted member for actuating saidslidingly mounted member to decrease the air space around the jet.

4. In a carbureter gasolene chamber and an air passage, a jet in saidpassage, a sleeve surrounding said jet, a member supporting said sleeve,a 1'0- tary valve in said air passage, and means interposed between saidrotary valve and the member supporting said sleeve for operating saidmember to decrease the air space around the jet.

5. In a carbureter, a casing forming a gasolene chamber and an airpassage, a jet in said passage, a sleeve constituting an air cont-rollersurrounding said jet, a slidable member supporting said sleeve or aircontroller, a spring exerting upward pressure on said slidable member,an air-admission valve insaid air passage, and means interposed betweensaid valve and said slidable member for operating the same against thepressure of said spring.

In testimony whereof I afiix my signature, in presence of two witnesses.

JOHN W. RAYMOND.

Witnesses MATTHEW SmBLEn, MELLIE GAn owAr.

a casing forming a

